Cisco CCST Networking - Sample Questions with answers

 CCST Networking sample questions for practice:

Question 1:

Which layer of the OSI model is responsible for end-to-end reliability and flow control?

• A. Transport Layer
• B. Network Layer
• C. Data Link Layer
• D. Physical Layer

Answer: A. Transport Layer

Explanation: The Transport Layer (Layer 4) is responsible for reliable end-to-end communication between devices. It uses protocols like TCP to ensure data integrity and flow control.

Question 2:

What is the purpose of the ARP protocol?

• A. To resolve IP addresses to MAC addresses
• B. To resolve MAC addresses to IP addresses
• C. To route packets between networks
• D. To provide network security

Answer: A. To resolve IP addresses to MAC addresses

Explanation: The Address Resolution Protocol (ARP) is used to map IP addresses to physical (MAC) addresses. This is essential for devices on the same network to communicate with each other.

Question 3:

Which network topology provides the highest level of redundancy?

• A. Bus topology
• B. Star topology
• C. Ring topology
• D. Mesh topology

Answer: D. Mesh topology

Explanation: In a mesh topology, every device is connected to every other device. This provides the highest level of redundancy, as a failure of one link or device will not affect the overall network connectivity.

Question 4:

What is the purpose of a firewall?

• A. To encrypt network traffic
• B. To filter network traffic
• C. To amplify network signals
• D. To route network traffic

Answer: B. To filter network traffic

Explanation: A firewall is a security device that monitors incoming and outgoing network traffic and blocks unauthorized access.

Question 5:

Which of the following is a common wireless networking standard?

• A. Ethernet
• B. Wi-Fi
• C. DSL
• D. Fiber Optic

Answer: B. Wi-Fi

Explanation: Wi-Fi (Wireless Fidelity) is a popular wireless networking standard that allows devices to communicate wirelessly.

 

Question 6:

What is a DDoS attack?

• A. A type of attack that floods a network or server with traffic to overload it.
• B. A type of attack that exploits vulnerabilities in software to gain unauthorized access.
• C. A type of attack that steals sensitive information.
• D. A type of attack that disrupts network communication.

Answer: A. A type of attack that floods a network or server with traffic to overload it.

Question 7:

What is a firewall?

• A. A hardware or software device that monitors incoming and outgoing network traffic and blocks unauthorized access.
• B. A type of encryption algorithm.
• C. A network protocol used for secure communication.
• D. A type of malware.

Answer: A. A hardware or software device that monitors incoming and outgoing network traffic and blocks unauthorized access.

Question 8:

What is phishing?

• A. A type of attack that uses social engineering techniques to trick users into revealing sensitive information.
• B. A type of malware that replicates itself.
• C. A type of network attack that exploits vulnerabilities in software.
• D. A type of attack that floods a network or server with traffic to overload it.

Answer: A. A type of attack that uses social engineering techniques to trick users into revealing sensitive information.

Question 9:

What is a VPN?

• A. A Virtual Private Network
• B. A Very Private Network
• C. A Virtual Public Network
• D. A Very Public Network

Answer: A. A Virtual Private Network

Question 10:

What is the importance of strong passwords?

• A. To protect against unauthorized access to accounts.
• B. To improve network performance.
• C. To increase internet speed.
• D. To enhance email functionality.

Answer: A. To protect against unauthorized access to accounts

 

Explanations for the CCST Networking Security MCQs

Question 6:

A DDoS (Distributed Denial of Service) attack overwhelms a target system with a flood of traffic, making it inaccessible to legitimate users. This can be achieved by launching attacks from multiple compromised devices.

Question 7:

A firewall acts as a security barrier, monitoring and controlling network traffic. It can block malicious traffic, prevent unauthorized access, and protect against various cyber threats.

Question 8:

Phishing attacks involve deceptive tactics, such as fraudulent emails, to trick users into revealing sensitive information like passwords, credit card numbers, or personal details.

Question 9:

A VPN (Virtual Private Network) encrypts internet traffic and creates a secure, private connection over a public network. This is often used to protect sensitive data transmitted over the internet.

Question 10:

Strong, unique passwords are essential for protecting online accounts from unauthorized access. Weak passwords can be easily guessed or cracked by hackers, making it easier for them to gain access to your accounts. Using strong, complex passwords, and avoiding reusing passwords across multiple accounts can significantly enhance your online security.